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Once considered a boxy, traditional style, the double-breasted suit was given a makeover for fall in slimmer, more streamlined silhouettes—marked by higher armholes, trimmer sleeves and pants, and a shorter jacket. Shown in stylish graphic and understated patterns, the new and improved double-breasted suit is worth a second look.

Gucci makes its gray windowpane suit pop with thin sky-blue lines that run the length of the slim wool jacket, $1,650, and pant, $620. (800.234.8224, www.gucci.com)

Giving patterns new depth, Bottega Veneta has created a subtle grid-like print that has been layered twice to create a chalky, burnished effect on the soft wool flannel fabric, $4,100. (212.879.5780, www.bottegaveneta.com)

Versace has taken an edgier approach to the wool-and-silk windowpane, price upon request, by adding curved lines that further emphasize the way the suit hugs a man’s frame. (888.721.7219, www.versace.com)